SU782826A1 - Thin-walled settler - Google Patents

Description

The invention relates to the field of purification of natural waters, namely, the upholding and filtration of natural waters from coagulated, suspended substances and can be used in the construction of municipal, industrial and agricultural water pipelines.

Closest to the invention. Yu, by its technical essence, was achieved - the effect is a settling tank, the con fi gurations of a cylindrical tank with a bottom containing a package of conical plates inside, at the exit of the KOTOJ IX are installed j-plates. The nal plate pack is thin-walled, the flocculation chamber is located, and between the plates is a cylinder with windows

The known settling tank has insufficient JQ current, which consists in a low washing efficiency.

The purpose of the invention is to increase the washing efficiency. For this, a thin layer settler is provided with a filter, 25 placed in the cylinder, and a bag placed over the plates.

FIG. 1 shows a sedimentation tank in the section; in fig. 2 shows the node J in FIG. one; in fig. 3 - sump in the plan.

The sump consists of a cylindrical tank 1 and bottom 2.

A bag of plates 3 is mounted in the tank. At the outlet of the bag, there are plates 4 of which are equipped with valves 5. At the stack of plates a thin layer float chamber 6 is installed with a packet of asbestos cement sheets 7. In the lower part of the float chamber, a perforated pipeline 8 for supplying raw water is coiled. A perforated conduit 9 is located in the MORROWAY part of the settler to remove the accumulated head. In the central part of the settler is placed a cylinder 10, in which a sandy filter 11 is located and a drainage pipe 12 is assembled.

In the upper part of the collection drainage pipe there is an annular x1 measure 13 for the filter wash water flow. A valve 14 is located in the lower part of the collection drain pipe. The collection drain pipe in the lower part passes into the pipe 15 of the filtered water outlet. The same pipeline serves to supply wash water to the filter. Under the filter is located under-filtered. New space 16 with a grid 17.

The sump works as follows.

The source water flows through conduit 8 into flocculation chamber 6. The water with the flakes is poured over; the upper edge of the chamber is formed, falls and enters the pack of plates 3. Here it is evenly distributed on the plates due to the Plates 4. As the water moves along the plates of the pack, a suspension of the suspension occurs. The BSBiBCb is compacted in bag 3 and flows down to the bottom of the settling basin, from which, along the perforated conduit 9, the sump is periodically withdrawn. Drainage water, traversing the plate pack 3 and WyiolceTky inlet drainage, sand filter loading and filter loading, and filtered BOjia flow into the collection drain pipe 12 and down into the pipeline 15 to drain the filtered water.

Flushing the filter is discontinued as follows. Wash water is supplied through conduit 15 to the sub-filter space 16. The valve 14 is behind; it is drained by the flow of water and all

The flow of rinsed water enters through the drainage screen 17 into the sand filter 11. At the same time, the sandy load expands and is washed in a turbulent flow. The washing water rises into the ring washing tower 13 of the washing water receiving system and is then discharged into the sewage system. The valves 5 at the same time close the access of the wash water to the stack of plates 3, thereby ensuring the flow of wash water from the bottom up.

Claims (1)

1. USSR author's certificate 660693, cl. At 01 D 21/16, 11/21/77. 1b